66516306 has 16 divisors (see below), whose sum is σ = 136628544. Its totient is φ = 21572784.

The previous prime is 66516293. The next prime is 66516311. The reversal of 66516306 is 60361566.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149590 + ... + 150033.

It is an arithmetic number, because the mean of its divisors is an integer number (8539284).

Almost surely, 2^66516306 is an apocalyptic number.

66516306 is an abundant number, since it is smaller than the sum of its proper divisors (70112238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66516306 is a wasteful number, since it uses less digits than its factorization.

66516306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299665.

The product of its (nonzero) digits is 19440, while the sum is 33.

The square root of 66516306 is about 8155.7529388769. The cubic root of 66516306 is about 405.1750622543.

The spelling of 66516306 in words is "sixty-six million, five hundred sixteen thousand, three hundred six".